Stoker.



G. ANDERSEN.

STOKER.

APPLIUATION FILED APB.13,19'08.

Patented Nov. 30, 1909.

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G. Amils'mf" STOKER.

APPLICATION FILED APR. 13, 1908. 941,486. Patented Nov. 30, 1909.

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GEQRGE ANDERSEN; OF CHICAGO, ILLINGIS.

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To all whom it may concern:

Beit known that I, Gnoneu ANounsEN, residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Stoker's, of which the following is a specification.

My invention relates to furnaces and par ticularl to automatic stokers, especially adapte for use with steam boiler furnaces.

I'With 'stokers as heretofore devised, considerable ditficulty has been experienced in properly distributing the fuel over the bed of the fire. g I

The object of my invention is to provide astoker which will automatically feed the fuel to the furnace and which will properly distribute the same. to obtain a more perifcct fire,'and a better consumption of the fuel. A I g Other objects will appear hereinafter.

VVith these objects in view, my inventionconsistsgenerally 1n a furnace having the' usual walls and grate and the'usual. feed door, in combination with a fuel hopper arranged upon the outside of said furnace, a

chute extending through said hopper through the wall of said furnace and above the grate, means for feeding fuel from said hopper to said chute and means on the end of said chute for distributing the fuel stoo drawings forming a part. ofthis specificaproperly over the grate or bed of the fire.

My invention. further consists in a- 'furnace of any ordinary or preferred type 1n combination with a fuel chute extending into said furnace above the grate, an .osclllatory nozzle upon the end of said chute and means for oscillating saidnozzle.

My invention further consists in various details of construction and arrangementsof parts all as will be hereinafter full. described and particularly peipted out n the v claim.

My invention will be more readily underby reference to the accompanying thin, in which,

Figure 1 is. a vertical longiti'id'inal section through the front end of a. boiler furnace e nipped with a stoker embodying my in- .vZntion in its preferred form, Fig. 2 is a front elevation thereof, Fi 3 is a- View similar to Fig. 1 illustrating a modified forni of a sto'ker, and Fig. i is a front elevation of a boilerfurnace equipped with the stoke-r illustrated in Fig. 3.

Specification of Letters Patent. Application filed April 13; 19%. Serial Patented new. so, taco;

No. aaacev.

drawings, furnace of 4 the bridge and 5 the grate. The front wall is provided with theusual feed door 6 and ash door 7.

Suitably arranged upon the outside of a furnace and above hopper 8 which is kept supplied by any suitable means. On account of the height of the hopper it mechanical conveyer for-supplying the same with fuel. Extending downwardly from the hopper is a fuel chute 9 which extends through the wall, preferably the front Wall of 'the furnace and terminates some distance .above the, level of the feed door. Arranged at the up er end of the chute or at the anism which feeds the fuel from the hopper to the chute in regular and constant quantities. This comprisesa pair of rollers l0--10 each; having-a. plurality of radial vanes or paddles. Any number of vanes each roller. The rollers 10 are arranged at the side of the fuelpassage and the vanes arcof such length that two, that is one upon each roller will rollers are rotated in opposite directions which feed the fuel in measured quantities and the'vaneswhen in horizontal position close the passageway both-against entrance of the fuel in one direction and smokeor gases in the opposite direction, that is from the furnace. The feed rollers are provided with the inter-meshing gears 12 and are driven from a power shaft 13 by sprocket gearing 14. The shaft 13 is bracketed u on door and is driven inany suitable manner '15 and pulley 16.

Pivotally connected to the lower end of the chute 9 is a swinging or oscillatory .nozzle 17. As the fuel is fed through. the chute, the nozzle is oscillated, distributing the fuel from the frontto the rear of the grate. The nozzle may be actuated by any suitable means, but I prefer to drive it from the shaft 13. To thisend the shaft is provided withl akdislg 18 having an eccentric in 19 which. sl,coupled to the nozzle by a link 20 passing through the front wall of the furnace.

It should be notedthat the end of the mouth of t e hopper, is suitable feed mech-I may be employed but I prefer to use. four for close the passageway; The

Referring now to Figs. 1 and 2 of the 1 indicates a. boiler and 2 its: which 3 indicates the ffhnt wall,

the furnace, is a'fuel preferable to provide a the front wait ofthe furnace above the cod and from any suitable source as by the belt chute extends into the oscillatory nozzle at all times. In this way a'continuous teed may be had when desired withoutthe fuel being discharged over the inner or upper end of the nozzle.

.v In Figs. 3 mi d-4 I have illustrated a modification wherein the feed hopper is arranged low enough to be readily filled by hand and provide suitable means for conveying the fuel from the hopper to the chute the lat ter being at anged entirely within the furnaee. 8 indicates the hopper havii'ig the teed mechanism l0.l1 which is in every way similarto that illustrated in F' s. l and 2. i-\r1.'anged beneath the hopper is an endless conveyer belt 21 which extends a short. distance within the furnace and above the flared or tunnel shaped chute 22 which is bracketed 'as at 23 to the inner face ot the Wall The conveyer passes around the rollers ii-211x125, the -former of which is coupled or connected to the shaft 13 by the sprocket gearing 26. The roller "24. is also coupled or connected to one of the rollers 10 of the feed mechanism by the sprocket gearing 27. The chute is provided with an osclllating distributing nozzle 17 which is similar in construction and operation to that illllStltllCtt and described in connection with Figs. I and 2.

Having described my invention what I claim as new and desire to secure by Letters Patent, is: i

In a device of the class described, a furnace having the usual walls and gratin in combination with a tuel hopper and av .t'uel chute, means tor teedingthe fuel to said chute in measured quantities, an oscillatory .nozzle of greater diameter than the. end ot said chute and pivotally mounted over the same for distributing the fuel over said grate, a rotary shaft arranged in front of said furnace and substantially parallel with the front wall thereof, a crank disk on said shaft a pitman connecting said crank disk and said nozzle and sprocket gearing;- connectiug said shaft with said fuel feeding means, substantially as d iseribedt In testimony whereof I have signed my name to this specification in the presence oi twosubscribing witnesses GEORGF i-\Nl) l lllSl ll\l.

Witnesses Anniu S. Po'r'rs, Ilumam F. l .nmns. 

